| #ifndef __BACKPORT_NETDEVICE_H |
| #define __BACKPORT_NETDEVICE_H |
| #include_next <linux/netdevice.h> |
| #include <linux/netdev_features.h> |
| #include <linux/version.h> |
| |
| /* |
| * This is declared implicitly in newer kernels by netdevice.h using |
| * this pointer in struct net_device, but declare it here anyway so |
| * pointers to it are accepted as function arguments without warning. |
| */ |
| struct inet6_dev; |
| |
| /* older kernels don't include this here, we need it */ |
| #include <linux/ethtool.h> |
| #include <linux/rculist.h> |
| /* |
| * new kernels include <net/netprio_cgroup.h> which |
| * has this ... and some drivers rely on it :-( |
| */ |
| #include <linux/hardirq.h> |
| |
| #if LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0) |
| /* |
| * Backports note: if in-kernel support is provided we could then just |
| * take the kernel's implementation of __dev_kfree_skb_irq() as it requires |
| * raise_softirq_irqoff() which is not exported. For the backport case we |
| * just use slightly less optimized version and we don't get the ability |
| * to distinguish the two different reasons to free the skb -- whether it |
| * was consumed or dropped. |
| * |
| * The upstream documentation for this: |
| * |
| * It is not allowed to call kfree_skb() or consume_skb() from hardware |
| * interrupt context or with hardware interrupts being disabled. |
| * (in_irq() || irqs_disabled()) |
| * |
| * We provide four helpers that can be used in following contexts : |
| * |
| * dev_kfree_skb_irq(skb) when caller drops a packet from irq context, |
| * replacing kfree_skb(skb) |
| * |
| * dev_consume_skb_irq(skb) when caller consumes a packet from irq context. |
| * Typically used in place of consume_skb(skb) in TX completion path |
| * |
| * dev_kfree_skb_any(skb) when caller doesn't know its current irq context, |
| * replacing kfree_skb(skb) |
| * |
| * dev_consume_skb_any(skb) when caller doesn't know its current irq context, |
| * and consumed a packet. Used in place of consume_skb(skb) |
| */ |
| #define skb_free_reason LINUX_BACKPORT(skb_free_reason) |
| enum skb_free_reason { |
| SKB_REASON_CONSUMED, |
| SKB_REASON_DROPPED, |
| }; |
| |
| #define __dev_kfree_skb_irq LINUX_BACKPORT(__dev_kfree_skb_irq) |
| static inline void __dev_kfree_skb_irq(struct sk_buff *skb, |
| enum skb_free_reason reason) |
| { |
| dev_kfree_skb_irq(skb); |
| } |
| |
| #define __dev_kfree_skb_any LINUX_BACKPORT(__dev_kfree_skb_any) |
| static inline void __dev_kfree_skb_any(struct sk_buff *skb, |
| enum skb_free_reason reason) |
| { |
| dev_kfree_skb_any(skb); |
| } |
| |
| #define dev_consume_skb_irq LINUX_BACKPORT(dev_consume_skb_irq) |
| static inline void dev_consume_skb_irq(struct sk_buff *skb) |
| { |
| dev_kfree_skb_irq(skb); |
| } |
| |
| #define dev_consume_skb_any LINUX_BACKPORT(dev_consume_skb_any) |
| static inline void dev_consume_skb_any(struct sk_buff *skb) |
| { |
| dev_kfree_skb_any(skb); |
| } |
| #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0) */ |
| |
| /* d1c76af9e */ |
| #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30) |
| enum { /* backport: provide the enum name already */ |
| GRO_MERGED, |
| GRO_MERGED_FREE, |
| GRO_HELD, |
| GRO_NORMAL, |
| GRO_DROP, |
| }; |
| #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30) */ |
| |
| #if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,8) |
| #define netdev_set_default_ethtool_ops LINUX_BACKPORT(netdev_set_default_ethtool_ops) |
| extern void netdev_set_default_ethtool_ops(struct net_device *dev, |
| const struct ethtool_ops *ops); |
| #endif |
| |
| #if LINUX_VERSION_CODE < KERNEL_VERSION(3,3,0) |
| /* |
| * BQL was added as of v3.3 but some Linux distributions |
| * have backported BQL to their v3.2 kernels or older. To |
| * address this we assume that they also enabled CONFIG_BQL |
| * and test for that here and simply avoid adding the static |
| * inlines if it was defined |
| */ |
| #ifndef CONFIG_BQL |
| #define netdev_tx_sent_queue LINUX_BACKPORT(netdev_tx_sent_queue) |
| static inline void netdev_tx_sent_queue(struct netdev_queue *dev_queue, |
| unsigned int bytes) |
| { |
| } |
| |
| #define netdev_sent_queue LINUX_BACKPORT(netdev_sent_queue) |
| static inline void netdev_sent_queue(struct net_device *dev, unsigned int bytes) |
| { |
| } |
| |
| #define netdev_tx_completed_queue LINUX_BACKPORT(netdev_tx_completed_queue) |
| static inline void netdev_tx_completed_queue(struct netdev_queue *dev_queue, |
| unsigned pkts, unsigned bytes) |
| { |
| } |
| |
| #define netdev_completed_queue LINUX_BACKPORT(netdev_completed_queue) |
| static inline void netdev_completed_queue(struct net_device *dev, |
| unsigned pkts, unsigned bytes) |
| { |
| } |
| |
| #define netdev_tx_reset_queue LINUX_BACKPORT(netdev_tx_reset_queue) |
| static inline void netdev_tx_reset_queue(struct netdev_queue *q) |
| { |
| } |
| |
| #define netdev_reset_queue LINUX_BACKPORT(netdev_reset_queue) |
| static inline void netdev_reset_queue(struct net_device *dev_queue) |
| { |
| } |
| #endif /* CONFIG_BQL */ |
| #endif /* < 3.3 */ |
| |
| #ifndef NETDEV_PRE_UP |
| #define NETDEV_PRE_UP 0x000D |
| #endif |
| |
| #if LINUX_VERSION_CODE < KERNEL_VERSION(3,11,0) |
| #define netdev_notifier_info_to_dev(ndev) ndev |
| #endif |
| |
| #if LINUX_VERSION_CODE < KERNEL_VERSION(3,7,0) |
| #define netdev_notify_peers(dev) netif_notify_peers(dev) |
| #define napi_gro_flush(napi, old) napi_gro_flush(napi) |
| #endif |
| |
| #endif /* __BACKPORT_NETDEVICE_H */ |